ウナギのPseudodactylogyrus症に関する研究-I

新種P. microrchisを含む3種の単生目吸虫の形態・分類について

抄録

Three species of dactylogyrids were found on the gills of the European eel, Anguilla anguilla which were cultured in eel farm ponds in Japan. They were all classified into the genus Pseudodactylogyrus G_USSEV, 1965, and were identified as P. microrchis n. sp., P. anguillae and P. bini. P. microrchis closely resembles P. anguillae, but definitely differs in the size of the testis and the prostatic reservoir from that of P. anguillae, where these organs of the former are much smaller than those of the latter. In addition, the length of anchor, the bar and the cirrus accessory of P. microrchis are significantly shorter than the those of P. anguillae.